Button configuration portion of an electronic controller



FIG. 1 is a top perspective view of an button configuration portion ofan electronic controller showing our new design;

FIG. 2 is a top view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a front side view thereof; and,

FIG. 6 is a rear view thereof.

The broken line showing of the remainder of the controller is forillustrative purposes and forms no part of the claimed design.

The ornamental design for an button configuration portion of anelectronic controller, as shown and described.